Diseño y fabricación de un molino funcional para Poliestireno Expandido (EPS).
Mira Segura, Laura Leonor
Dorantes Benavidez, Felipe de Jesús
Nájera Segovia, José Luis
Trejo Martínez, Alfredo
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This project proposes a new design and construction of a densifying machine (mill) for the expanded polystyrene recycling process (unicel-EPS) and to be incorporated into an injection process. This material know in Mexico as unicel, is widely used througouth the country for its low price and easy access, however, it is a material that is not recycled in a potential way, because of its properties, it is difficult to do it in conventional mills. Taking advantage of the area in which the research is carried out, in the eastern part of the state of Mexico, a mill is manufactured that allows the grinding of the EPS material. To get to a new design of the machine, computer-assisted sketches were made in order to generate the prototype, and with the help of a 3D printer the parts of the blades were checked. The proposed mill is based on a three-phase motor with a power of 5Hp and a speed of 1750 rpm. A 177.88 mm pulley was adapted and the parts of the blades that will cut the material are made of steel. The novelty of these blades is that they rotate in an inverse direction to cause the same air that they emit to attract the material to be ground. Finally, tests were carried out with the grinding, obtaining the EPS cut into small particles (less than 0.5 cm) and mixed with virgin material (Polystyrene) it was used in the process of slice injection, being demonstrated that it’s possible to reuse it as raw material for the manufacture of injected pieces, modifying the consumption cycle of these recycled making it more attractive in the plastics sector at lower costs, in addition to reducing the degree of contamination in the confined spaces for waste in the area.